Add methods to clear recent crs or remove one crs

YoannQDQ · YoannQDQ · commit 08bf81dbebde · 2023-04-24T09:22:32.000+02:00
diff --git a/python/core/auto_generated/proj/qgscoordinatereferencesystem.sip.in b/python/core/auto_generated/proj/qgscoordinatereferencesystem.sip.in
@@ -1123,6 +1123,20 @@ Pushes a recently used CRS to the top of the recent CRS list.
 .. versionadded:: 3.10.3
 %End
 
+    static void removeRecentCoordinateReferenceSystem( const QgsCoordinateReferenceSystem &crs );
+%Docstring
+Removes a CRS from the list of recently used CRS.
+
+.. versionadded:: 3.32
+%End
+
+    static void clearRecentCoordinateReferenceSystems();
+%Docstring
+Cleans the list of recently used CRS.
+
+.. versionadded:: 3.32
+%End
+
 
     static void invalidateCache();
 %Docstring
diff --git a/src/core/proj/qgscoordinatereferencesystem.cpp b/src/core/proj/qgscoordinatereferencesystem.cpp
@@ -2942,6 +2942,40 @@ void QgsCoordinateReferenceSystem::pushRecentCoordinateReferenceSystem( const Qg
   settings.setValue( QStringLiteral( "UI/recentProjectionsProj4" ), proj );
 }
 
+
+void QgsCoordinateReferenceSystem::removeRecentCoordinateReferenceSystem( const QgsCoordinateReferenceSystem &crs )
+{
+  if ( crs.srsid() == 0 || !crs.isValid() )
+    return;
+
+  QList<QgsCoordinateReferenceSystem> recent = recentCoordinateReferenceSystems();
+  recent.removeAll( crs );
+  QStringList authids;
+  authids.reserve( recent.size() );
+  QStringList proj;
+  proj.reserve( recent.size() );
+  QStringList wkt;
+  wkt.reserve( recent.size() );
+  for ( const QgsCoordinateReferenceSystem &c : std::as_const( recent ) )
+  {
+    authids << c.authid();
+    proj << c.toProj();
+    wkt << c.toWkt( WKT_PREFERRED );
+  }
+  QgsSettings settings;
+  settings.setValue( QStringLiteral( "UI/recentProjectionsAuthId" ), authids );
+  settings.setValue( QStringLiteral( "UI/recentProjectionsWkt" ), wkt );
+  settings.setValue( QStringLiteral( "UI/recentProjectionsProj4" ), proj );
+}
+
+void QgsCoordinateReferenceSystem::clearRecentCoordinateReferenceSystems()
+{
+  QgsSettings settings;
+  settings.remove( QStringLiteral( "UI/recentProjectionsAuthId" ) );
+  settings.remove( QStringLiteral( "UI/recentProjectionsWkt" ) );
+  settings.remove( QStringLiteral( "UI/recentProjectionsProj4" ) );
+}
+
 void QgsCoordinateReferenceSystem::invalidateCache( bool disableCache )
 {
   sSrIdCacheLock()->lockForWrite();
diff --git a/src/core/proj/qgscoordinatereferencesystem.h b/src/core/proj/qgscoordinatereferencesystem.h
@@ -1063,6 +1063,18 @@ class CORE_EXPORT QgsCoordinateReferenceSystem
      */
     static void pushRecentCoordinateReferenceSystem( const QgsCoordinateReferenceSystem &crs );
 
+    /**
+     * Removes a CRS from the list of recently used CRS.
+     * \since QGIS 3.32
+     */
+    static void removeRecentCoordinateReferenceSystem( const QgsCoordinateReferenceSystem &crs );
+
+    /**
+     * Cleans the list of recently used CRS.
+     * \since QGIS 3.32
+     */
+    static void clearRecentCoordinateReferenceSystems();
+
 #ifndef SIP_RUN
 
     /**
